Improvement in lags for pickers



G. .F. BARD. Lags for Pickers.

Paten-ted 1an. 27, 1874.

UNITED STATES PATENT OFFICEe GEORGE F. BARI), OF NORVIOH, OONNEOTICUT.

IMPROVEMENT IN LAGS FOR PICKERS.

Specification forming part of Letters Patent No. 146,743, dated January 27, 187.4; application tiled February 14, 1872.

To ull whom it may concern Be it known that I, GEORGE I". BARD, of Norwich, in the county of New London and State of Connecticut, have invented certain Improvements in Lags for the Cylinders of Shoddy-Pickers and other like machines, ot' which the following is a specification:

M y invention relates to lags for pickers; and consists in a lag, made as herein described, and iilled with tapering teeth secured at the back hot' the lag-plate by means ot sott inet-al.

Figure lis a transverse seetion of the lag, showing the'hard and soft metals, and tapering teeth grooved or scored at thebase, that the. soft metal may take a better hohl. Fig. 2 is a longitudinal section of the same.

A is the face or sh ell of the lag, which should be made of east hard metal, malleable iron being preferable. Its exterior sides are shaped like the ordinary lag, and its back, whiehlies upon the cylinder, is hollowed out, leaving a walled space, and the face ot sufficient thick-A ness to possess the requisite strength; and+ though this face small holes are made, into which the tapering teeth are driven from the back side, the bases oi' the teeth coming even with the back of the lag. The ends of the lag are provided with screw holes. A former, shaped like the part of the cylinder upon which the lag lies, is placed upon the back of the lag and the soft metal poured in, the teeth having been previously driven into place.

This lag of soft and hard metal possesses greater strength than the one of all soft metal,

and upon breaking any of the teeth the lag may be cast into the tire and the soft metal melted out, when new teeth can be again inserted in the same shell.

Tith my construct-ion n o time need be eonsumed in arranging the teeth in a mold, they are rinly ixed in position before the metal is poured in.

The teeth O are tapered for convenience ot' driving, and grooved or scored at their bases for additional security. l) are the ends ot' the lag; and E, holes therein, by which the lag is bolted to the cylinder.

I am aware that it is not new to hold teeth by soft lnetal 5 but I ani not aware that an iron lag has been recessed at its back and perforated for the yreception of teeth.

I provide hard metal upon the working side and around the base of the teeth to prevent lateral strain, and soft metal at the back ot' the teeth, which are scored to keep them more firmly in position. i

I claim as my invention- A cast-metal lag recessed at the back, as 

